BGE Add object action deforms a sphere mesh
Opening up your file, your PlayerBound object has a scale of 1.28, 1.28, 3.70 on it.

Select PlayerBound, press ctrl+a, then click scale to reset the scale to 1, 1, 1 without changing the geometry.

Right now your spheres are inheriting PlayerBound's scale, making them about 3 times as long as they are wide.